The bbc micro:bit CAD resources:
The team here at Kitronik have created a CAD model of the BBC micro:bit. We use these models to produce many of the resources we create for the BBC microbit. We've put up these models for you to use free of charge for your own designs and renders. Students and teachers (and home users) alike are sure to find them a good starting point for projects based around the BBB micro:bit. The files are available in the following formats (see bottom of page for download links):- .iges
- .stl (which can be used in most CAD programs and for 3D printers)
- .sat
- .obj
Autodesk - FREE Educational Design Software
To use these files you will need some CAD software. Autodesk provides their professional software free of charge to Education and Home user which makes it an ideal choice. Autodesk gave the following reason for providing such easy access to its products:'Closing the skills gap starts in education. Autodesk is tackling this by providing schools with common access to the same advanced technology being used by industry professionals today. Autodesk provides schools, students and teachers with free access to its professional 3D design software. This will enable educators to introduce design thinking into our classrooms allowing students to imagine, design and create a better world. Using these tools to learn how to solve real-world challenges in new creative ways will be the perfect preparation for our next-generation workforce. Equipping them with 21st-century skills to meet industry demands and advance economies worldwide.'For more information, click here.
How Kitronik Are Using The BBC microbit Design
We're using this design to create new resources which we thought you'd find useful. One example is this poster highlighting the features of the BBC micro:bit (PDF download available below):
Also, another is this useful mechanical datasheet (download available below): 
Using The Files When Creating 3D Printed Case Designs
Having the BBC micro:bit as a CAD object is incredibly useful when creating 3D printable (or laser cut-able) case designs. It means you can create your design with the knowledge that when you come to manufacturer the final design the BBC microbit should fit perfectly!
By CraftyRobot
Downloads
The CAD files are individually zipped and will need to be unzipped, with a program like winzip or winrar, prior to use. The PDFs will open in your browser and they can then be downloaded from there.- .stp file.
- .stl file (Outside shell only - For 3D Printing).
- .obj file.
- .iges file.
- .sat file.
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Mechanical Drawing.
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Poster.
©Kitronik Ltd – You may print this page & link to it, but must not copy the page or part thereof without Kitronik's prior written consent.
11 comments
Mark Donnison
Hi Remy, not at the moment, no. I will suggest it and see what the consensus is.
REMY
Hi, Thanks for this ressource. Have you got the CAD models for the servo board and the motor board? Many thanks
Owen Brotherwood
Is there another version of the mechanical datasheet? The present one does not contain the battery connector to external batteries https://www.kitronik.co.uk/pdf/bbc_microbit_mechanical_datasheet_V2.pdf
Owen Brotherwood
Haas Kitroniks releasable elements to allow for easy pcb creation in some popular pcb program? Currently, I am evaluating easyeda but can switch to “anything” if needed. https://easyeda.com/OwenBrotherwood/Baggybit-230bf229bd1a4e67a54f10b8406a4a19
Rob Haywood
Hi Tim, .stp files now added. Rob
Rob Haywood
Hi James, We're not able to do that, but have just added .stp, .stl and .sat files. Rob
James Lees
We're lucky enough to be getting these micro:bits let alone have inventor 2016 on our schools computers! You should cater for all schools and get these files available on inventor 13, 14 and 15!
james lenton
I have downloaded the inventor files when i open the assembly model it is missing 3 .png files is there something I'm missing or are they not included in the .zip file? A re they available elsewhere ?
Andrew White
Hi Tim, These files were created in the 2016 version of Inventor by our in-house Graphic Designer. Therefore your 2015 version will not work with these files. You can get Inventor 2016 directly from Autodesk and it is free for students and educators with a 3-year licence here: http://www.autodesk.com/education/free-software/inventor-professional with a valid email address. Hope this helps, Many thanks, Andrew
Tim Brotherhood
I tried opening the SAT and STL files into other CAD software with with the following results: Solid Edge – SAT OK – STL No Creo 3.0 – SAT No – STL No Would it be possible to get the assemblies in either IGES or STEP format?
Tim Brotherhood
Great resources and I can't wait to get my hands on a micro.bit. I downloaded the CAD files but the inventor models won't open. I'm running the Student Edition of Inventor Professional 2015 with all updates in Autodesk Application Manager installed but when I try to open the assembly I get three errors like the one below. “Database scheme for file is (20.0 (build 200096000, 96)), which is newer than this version (19.0 SP1 (build 190203100, 2013)) of the software”. Do I need to upgrade my version of Inventor? if so, do you know where I go to do so?